linux-kernel - linux.git: printk() problem

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <201610122230.DID43237.FSOHFFQOJOtVML@I-love.SAKURA.ne.jp>
Date:   Wed, 12 Oct 2016 22:30:03 +0900
From:   Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To:     torvalds@...ux-foundation.org
Cc:     linux-kernel@...r.kernel.org
Subject: linux.git: printk() problem

Hello.

I noticed that current linux.git generates hardly readable console output
due to KERN_CONT changes. Are you suggesting developers that output like
this be fixed?

[   93.723582] Mem-Info:
[   93.725919] active_anon:380970 inactive_anon:2098 isolated_anon:0
[   93.725919]  active_file:242 inactive_file:275 isolated_file:0
[   93.725919]  unevictable:0 dirty:0 writeback:65 unstable:0
[   93.725919]  slab_reclaimable:3825 slab_unreclaimable:12527
[   93.725919]  mapped:760 shmem:2164 pagetables:9297 bounce:0
[   93.725919]  free:14046 free_pcp:74 free_cma:0
[   93.735626] Node 0 active_anon:1523880kB inactive_anon:8392kB active_file:968kB inactive_file:1100kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:3040kB dirty:0kB writeback:244kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 1056768kB anon_thp: 8656kB writeback_tmp:0kB unstable:0kB pages_scanned:0 all_unreclaimable? no
[   93.742894] Node 0 [   93.743319] DMA free:7156kB min:408kB low:508kB high:608kB active_anon:8672kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15988kB managed:15904kB mlocked:0kB slab_reclaimable:0kB slab_unreclaimable:40kB kernel_stack:0kB pagetables:36kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[   93.750951] lowmem_reserve[]:[   93.751597]  0
 1699[   93.752678]  1699
 1699[   93.753910] 
[   93.754822] Node 0 [   93.755216] DMA32 free:49028kB min:44644kB low:55804kB high:66964kB active_anon:1515208kB inactive_anon:8392kB active_file:968kB inactive_file:960kB unevictable:0kB writepending:232kB present:2080640kB managed:1760736kB mlocked:0kB slab_reclaimable:15300kB slab_unreclaimable:50068kB kernel_stack:20320kB pagetables:37152kB bounce:0kB free_pcp:436kB local_pcp:240kB free_cma:0kB
[   93.763709] lowmem_reserve[]:[   93.764235]  0
 0[   93.765630]  0
 0[   93.767544] 
[   93.768676] Node 0 [   93.769135] DMA: 
1*4kB [   93.770932] (U) 
0*8kB [   93.772192] 1*16kB 
(U) [   93.773438] 1*32kB 
(M) [   93.774574] 1*64kB 
(U) [   93.775997] 1*128kB 
(U) [   93.777665] 1*256kB 
(U) [   93.778861] 1*512kB 
(M) [   93.780004] 2*1024kB 
(UM) [   93.781225] 0*2048kB 
1*4096kB [   93.782422] (M) 
[   93.783423] = 7156kB
[   93.784445] Node 0 [   93.784844] DMA32: 
1265*4kB [   93.786204] (UMEH) 
790*8kB [   93.787412] (UMEH) 
335*16kB [   93.788634] (UEH) 
265*32kB [   93.790037] (UE) 
89*64kB [   93.791254] (UEH) 
23*128kB [   93.792541] (UME) 
9*256kB [   93.793787] (ME) 
13*512kB [   93.794956] (UME) 
6*1024kB [   93.796094] (UME) 
0*2048kB [   93.797435] 0*4096kB 
[   93.798413] = 48964kB
[   93.799357] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
[   93.802221] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
[   93.804476] 2700 total pagecache pages
[   93.805949] 0 pages in swap cache
[   93.807557] Swap cache stats: add 0, delete 0, find 0/0
[   93.809417] Free swap  = 0kB
[   93.810573] Total swap = 0kB
[   93.811788] 524157 pages RAM
[   93.812903] 0 pages HighMem/MovableOnly
[   93.814216] 79997 pages reserved
[   93.815292] 0 pages hwpoisoned

[  185.497015] Showing all locks held in the system:
[  185.500009] 1 lock held by systemd/1:
[  185.501377]  #0: [  185.501717]  (
&(&ip->i_mmaplock)->mr_lock[  185.503347] ){++++++}
, at: [  185.504566] [<ffffffff812a1600>] xfs_ilock+0xd0/0xe0
[  185.506157] 2 locks held by khungtaskd/46:
[  185.507553]  #0: [  185.507896]  (
rcu_read_lock[  185.509091] ){......}
, at: [  185.510277] [<ffffffff8112054e>] watchdog+0x9e/0x480
[  185.512072]  #1: [  185.512413]  (
tasklist_lock[  185.513602] ){.+.+..}
, at: [  185.514802] [<ffffffff810b5adf>] debug_show_all_locks+0x3f/0x1b0